Backup/Restore Speeds?

[Guest_imported]

A very open question!! But, can anyone tell me what sort of backup and restore speeds they get using Veritas Netbackup Datacentre, backing up either Unix or NT boxes, over a 100 Mb link. Other factors like tape drive, type of LAN (fibre or CAT5) etc, don't worry about. For info we use 9840 drives in a Storagetek L5500 type Silo.

I know this a bit of open question but any info that you have found out would be marvolus! Info like total size of backup, number of files, spec of Network and Tape drives used, and speed (MB/S or GB/Hr) would be really helpful.

Thanks very much.

Simon Goldsmith
Storage Management

 

[Guest_imported]

We use FC attached 9940 drives and are getting speeds between 18Mbs and 35Mbs on our unix master (8 attached drives, multiplexing enabled)

 

[ulsj]

Hi!

I normaly see backups speeds about 6MB/s over a 100 mb LAN.
Restore are very dependant on how you do backups.
inc full multi plexing and so on. Maby someting like 4MB/s

/Ulf

 

[johnny99]

To get more the 10MB/s over 100Mbit/s LAN is max. (without client compression).
But you are lucky that you have 9840 that can handle all the start/stop activity. This would kill a DLT drive and tape.

/johnny

 

[wmurray2]

Any body have information on Windows 2000 backups using NetBackup over SANS to 9940

 

[johnny99]

We use 9940 and over the LAN we get a max of 550MB/min.
But we use BackupExec (Thank God that we are upgrading to NetBackup)
We haven't been able to get BacnupExec over the 10MB/s mark but I think the real problem in our installation is BackupExec.
I have seen people pulling up to 35 MB/s on Unix.

The backup speed depend a lot on your data. When we try to backup users fileshares and the shares that contains a lot of small files the drive is not the problem.

9940 is the best tapedrive around (and 9840 and 3590) but if you haven't got it wait a few weeks and get the 9940B

When you look at backupspeed the data in the backup is very very importend.
Data on Windows servers tend to be able to compress 1:1,5 to 1:2 (not more) That gives you a max of 20 MB/s on 9940.
If the files a small the open/close time of each files can pull the speed down to as low as 0,5 to 1,0 MB/s but that is a problem in Win2K (and your backup software) not the drive.

In our shop we only use the 9940 on Windows servers, so my numbers on Unix and mainframe is not my own.

/johnny